Leading Communication Features

With the C2Call SDK it’s no longer necessary to develop all communication features from scratch.

Landline & Mobile Phone Calls

Rich Media Messaging

Voice over IP & Video Calls

SMS/ MMS Messaging

Group Voice & Video Chats

Push Notifications

Instant Messaging

Push to Talk

Phone Calls to Landline & Mobile Phone Networks

C2Call SDK is capable of delivering amazingly inexpensive calls to landlines and cellular networks, globally. No additional roaming charges are obscured, nor there are any connection charges or a call start-up fee.
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Free Group Voice & Video Chats

With its exclusive cross-platform 7-way Group Video calling technology for mobiles, tablets & desktops, C2Call SDK makes the communication experience highly splendid! The SDK delivers a High Definition Video Chat experience, where video participants in a group call can interact with each other LIVE; without switching the feed!
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Free Voice and Video over IP Calls

C2Call SDK integrated apps now let users communicate over VoIP (Voice and Video Over Internet Protocol). The SDK uses HD codecs for video and voice encrypted streams over IP where users can have a conference call with up to 7 video and 20 audio participants.
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Instant Messaging & Rich Media Messaging

App users can send Instant Messages (IM) as well as interactive objects such as sounds, images, video clips, animations, video messages, voice notes, location information and more. The users of Android, iPhone, iPad and iPod touch can also share contact info from their Phonebook to others.
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SMS/Text Messaging

C2Call SDK empowered apps have the ability to send Texts/SMS to 400+ global cellular networks and that too in milliseconds. Messages can be sent to peers via multiple platforms using Android, iPhone, iPad and iPod touch. Moreover if the user at the other end is registered and not online, he gets a notification e-mail of the SMS sent.
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Ready to use all the great communication features for free?

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Developer Area

About us

C2Call GmbH leads the way in introducing next generation mobile and browser-based calling solutions for the computing cloud. FriendCaller for iOS and Android are built using C2Call SDK, and demonstrate the unique capabilities to establish a peer-to-peer connection with any mobile platform and with any Internet browser without prerequisite software installations. With the new C2Call SDK, developers would now be able to integrate features alike FriendCaller in their existing or new apps on mobile.